Forging mechanism



Jan. 29 1924.

J. R. BLAKESLEE FORGING MECHANISM Filed NOV. 27. 1922 ATTORNEYS Patented Jan. 29, 1924.

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.l Y 1,432,107 PATENT ortice.N

JOI-IN R. BLAK'ESLEE, OF CLEVELAND, OH'IO,W`ASSGNOR` TO THE AJAX MANUFACTUR- ING COMPANY, or CLEVELAND,

OHIO, AlCORPORATION OF OHIO.l

rondine innoministri.`

Appiieation aidNovember 27,1922,v semaine.y 603,451.

To @ZZ whom t may concern):

Be itv known that I, JOHN R. a citizen of the United States, and a resident of Cleveland, county of Cuyahoga, and State of IOhio, have invented a new and useful Iniprovement in Forging Mechanism,of which the following is a specification, the'prin'# ciple` of the invention being" hereink ex plained and the best inode in whiclil 'have'` contemplated applying that pri1i`ciple,`so"as` to distinguish it from other-inventions.

The present improvements," relating, as

indicated, to forging machines, have`.more

particular regard; to the provision in Ina-1` chines of this type' of a separableconne'C--' tion between the 'reciprocable'header slide and the pitman. In U. SjLetters'Patent No. 737,065, granted to `John R. Blakeslee' p yunder date of August 25, 1903, therelis" being'slotted to receive a'pin in thepitinan .which ispermtted to reciprocate `without' moving the die block when such arm isdis- 1- connected fromthe pitinan, combined -vvith a slide having an `incli'nedface "arrangedto' y be vmoved into the pathof a bearingbnjsaid arm, whereby the latter is raised forthe pur ose i'nquestion.

owever, in the case ofv forging infaf'v chinesk of large size Where all tlie` .parts re-l j quireI to beina'de of veryheavyand" substantial construction, includiiigsucli auxiliary arm, the 1weight of. the latter is,l 'comV vsiderable, Idue to thelengthvwhich itinust.. necessarily be' given. Furthernliorel,` d "in,` order that' "saidy arm may be disengaged'fromj the pitman, it requires to be inoved'through a considerable; vertical distance; otherwise n Finally,'the ini terpos'ition of such yarm, as shown in the"v it willnotfclear the latter.

aforesaid patent, necessitates the lengthenf ing of the distance between thecrankshaft and theslide inorder to accommodate such auxiliary arm. The objectof the present improved construction has been to eliminate the several diiiculties orl` objections rjust noted'r'by forming the slot rin the slide, wherewit'h the pin on thepitin'an'engages,

on' the arc 'of a circle, thus shortening the rectilinear distance through which'the end" BLAKESLEE,y

of the'pitman movesrelativelyfto the slide when is ',olesiredl to hold. the latter stationary.:A At the 'saine y time this "permits the employment' of a smaller, more coiiiipact" auxiliary arm inthe slide `and such armk yneeds be moved only through a relatively small .distancein order to leave the pitman freetoA reciprocate without'moving theslide.

y To "the 4acconiplishment of the 'foregoing andllcted ends, the invention, then,"con

v :and particularly pointed out in the,v claims," the' annexed drawing' and fthe' fell` lowingjrdescription setting forth" in detail certainv mechanism embodying the invention, such disclosed means constituting, however, but" one of various"mechanicalv forms in which the principle ofthe' inyention may be used. i o Y In 'said `ar'ineaed ydrawing p Fig; l isa. broken plan viewof a forging ymachji'nex embodying my present improvements, I only 'the portions ofpresent interest being illustrated; Fig-"2 is a side elevation of "the,y same; and' Fig; 3` is a' central lofigitudi'nal4 section through the header slide,`

"only, the'd header Vslide 1 and the :operating f mechanism''therefor areffsh'own, af 'brekenV ciprocably` held in suitable]` guides', itsv movevided for Lsec'firing in the recess 3 in thejfor- 'Polfteir'o the Supporting ffenfework" 2` bef y ing indicated "fin" dottedjfoutline' in Eig., 2. It f Wil'l "befunder'stood' thatf said slide is rementjbeiig rdin'arily'in 'horizontal direco. ,tion,"'and" that suitable means willv be'prol wardfface of said slide? thedie or ydies which"v may' V be required' foruse in fthe yparticular l`operation?in hand.`

The recipro'catory 'movement Lof the slide is derived fromja crank shaft Ltliatis lconiieet'edi"` with lsaid slide through the lmedium offsuital'ileV "linkage, including the sep-arable' connecting means or 'lock devicefof present interest.` `The main element in such linkage is'tlie 'pitman 5 which-is of articulated con-` struction.4 `The respective parts 6 and 7 bejingA hingedftogether by a pin'8.r Fori-the` purposefof normally'maintaining such parts in rigidY relation, so' as to make ofy them a" single lever,a vlatch 9,l is pivotally attached to thefrea'rfor main parte, said latchbeing adapted 4vto engage against anupstandin'g lug or yprojection on the part 7 "that at the same time serves as a stop to'` limit the movement of said part upwardly; `Afcoinpression spring 11 is mounted betweenlatch member 9 and a lug or projection12 that rises Vupwardly from the part 6 and serves normallly to maintain said latch member in engagement with said lug 10.5V Vhen, however, the pressure transmitted by the 'die-block to the end of the forward part 7l of the pitmanbecomes unduly great so that damage might result, the pressure of spring 11 is overcome and the Joint between said part 7" and the main part 6 of the pitinan the lower end of said member being in turn pivotally attached to said die-block 1 by a pin 17. Thelateral'ly projecting ends of the pin 18, whereby Said part 7 is thus connected 'to Vmember 16, are receivedk in slots 19 cuty in the sides of the slide, such slots being of arcuate form, asshonf'n in Figs. 2 and 3. Inset in the rear end of each slot is a bearing block against which the corresponding endofsaid pin 18, or rather of the box 21that surrounds the same, is adapted to Contact in the operative condition 'of the parts shown in full lines inthe several iigures. Such position of the parts is normally maintained by the engagement of a lock 22 pivotally mountedin the slide about a transverse axis located forwardly 'of the slots 19'with a Anotch 28 in member 16. When thus in' engagement with such notch, the lock 22 lies in substantially horizontal position, its axis being bearing blocks20 take the rearward pulling strain.

Lock 22,1' however, is freely movable upwardly about its pivotal axis into a position where it is entirelyV clear from engagement with member 16 and thereupon the Vlatter is sition, forward movement of said .pitman is inefl'ective toV advance the slide, the only result of continued operation of shaft libeing approximately. aligned with the pin'18 as also,vk for that mat: ter, with the pin 8, which latter serves'to` Vconnect the two partsof the pitman 5. In such operative position of the parts, saidV lock, it will be seen, takes a portion of the forward thrust of the pitman, while the to oscillate member 16 idly back and forth about its axis in the slide 1'; K Y

For the purpose of thus lifting the lock 22, substantially the same means are employed as shown and described in Patent No.V 737,065 hereinbefore'referred to. In other words, a plate 25 is mounted in the frame ofthe machine in transverse slide bearings (not shown) so as to lie adjacent to vthe path of movement of slide 1, said plate being formed atits inner end with an inclined face or cam 26. Any-suitable means, as for example a treadle or hand lever, may be providedV for moving said plate 25 in or out, as occasion may require, in its slide- 'way When occupying its innermost position, the inclined face 26 on said Aplate is disposed to engagewith aV roller 27 mounted on thel free'end of a lever 28 that is attached to a 'roch shaft 29 secured' in suitable bearings 30 to the upper face of the die-block or slide 1. v.There is also fixe( to said shaft a second leverl, approximately parallel with lever 28, that is connected by means of a link 32 with the aforesaid lock 22. As a Vresult upward rocking movement of said lirst lever, such as will be produced by engagement of the cani face 26 therewith, will be effective to lift said lock, the amount of oscillation imparted being gauged so as to cause said lock entirely to clear notch 23 in member 16.

its a matter of fact, the amount of lift, which is required toV be given the lock 2 2, need not be great, it being sufficient merely to tilt said lock so that when member 16 oscillates about its axis, it will no longer encounterv the forward end of the lock. Considerably less clearance, in other words, is required than where the lock engages directly, as in such prior patent, with the longitudinally reciprocable end of the pitman or with a similarly reciprocable member carried thereby. Furthermora'due to the fact Vthat said memberri is YthusV oscillatorily mounted in the slide 1, t-he reciprocable movement of the forward end of the pitman is translated into an .oscillatory movement whenever the lock .is disengaged and con-V 22 is much less than that yof the old lock as it isbut a fraction of the length, being ordinarily less than one-half as long.

@ther modes of applying the principle of my invention may be employed instead of the one explained, change being made as k'regards the mechanism herein disclosed,

provided the means'stated by any of the following claims or the equivalent of Vsuch stated means beemployed. f

@Il vi.

I therefore particularly point out and distinctly claim as my invention c l. The combination with a reciprocable slide; of a crank-shaft and pitman'or operating same; a member oscillatorily mounted on said slide, said pitman being pivotally connected with said' member; iixed means limiting oscillation of said member in Vone direction; and movable means adapted to lock said member against oscillation` in the opposite direction.

2. The combination withr ay reciprocable slide; of a crank-shaft and pitman for operating same; a member oscillatorily mounted on said slide about a transverse axis, said pitman being pivotally connected with said member; xed means limiting oscillation of said member in one direction and a lock pivotally mounted on said slide about a transverse axis and adapted to engage with said member so asv to prevent oscillation thereof in the opposite direction. l

3. The combination with a reciprocable slide; of a crank-shaft and pitman for operating same; a member oscillatorily mounted on said slide about a transverse axis, said pitman being pivotally connected with said member; lixed means limiting oscillation of said member in a rearward direction; and a lock pivotally mounted on said slide about a transverse axis located forwardlyof said member, the latter having a notch opposed to and adapted to be engaged by said lock in one position of the latter, whereby Oscil-` lation ofsaid member may be prevented in the opposite direction.

4. The combination with a reciprocable slide; of a crank-shaft and pitman for operating same; a member oscillatorily mounted on a transverse axis in the lower portion of said slide, said pitman being pivotally connected with the upper portion of said member; stops in said slide adapted to limit oscillation of said member in a rearward direction; and a lock pivotally mounted on said slide about a transverse axis located forwardly and above the axis of said member, the latter having a notch opposed to and adapted to be engaged by said lock in one position of the latter, whereby oscillation of said member may be prevented in the opposite direction.

5. The combination with a reciprocable slide; of a crank-shaftand pitman for operating same; a member oscillatorily mounted on a, transverse axis in the lower portion of said slide, said pitman being pivotallyk connected with the upper portion of Said member; stops in said slide adapted to limit oscillation of said member in a rearward direction; a lock pivotally mounted on said slide about a transverse axis located forwardly and above the axis of said member, the latter having a notch opposed to and adapted to be engaged by said lock in one position of the latter, whereby oscillation of said member may be prevented in the opposite direction; means carried by said slide adapted to raise said lock; and other means located adjacent the path of movement of said die-block adapted to actuate said lastnamed means.

Signed by me, this 24th day of November, 1922.'

JOHN R. BLAKEsLEE. 

